Update NOTICE.txt (#24426)

* Update NOTICE.txt

* Update NOTICE.txt

* Update NOTICE.txt

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

webapp/channels/NOTICE.txt

@@ -79,6 +79,32 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 
 
+---
+
+## @giphy/js-fetch-api
+
+This product contains '@giphy/js-fetch-api' by Giphy.
+
+Javascript API to fetch gifs and stickers from the GIPHY API.
+
+* HOMEPAGE:
+  * https://github.com/Giphy/giphy-js/tree/master/packages/fetch-api
+
+* LICENSE: MIT
+
+---
+
+## @giphy/react-components
+
+This product contains '@giphy/react-components' by Giphy.
+
+The GIPHY React SDK lets you and your users easily access the world’s largest GIF library anywhere on your website. 
+
+* HOMEPAGE:
+  * https://github.com/Giphy/giphy-js/tree/master/packages/react-components
+
+* LICENSE: MIT
+
 ---
 
 ## @guyplusplus/turndown-plugin-gfm